11.24: Two wave pulse1v0fc .1xp3evfv-gckb ek*p xf).uz2y , 7ytos travel to the right toward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following picturebp1e v2f,fv.3 ce k yyf1x0vz*x o-uc.kt)p7gs best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes theqbeib7v1wx(5z3ue- kexv v 7h3 s-4-6 rbhiwk surface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave and the transmitt6vi xkv-s 7ekwbw14 zbi5--v3uh b 37 exeq(hred wave?

  12.02: A ray of light p1d f ;m8gzw5gaasses straight downward through the point labeled B in the dia;d8zgw5m1 ga fgram shown. The ray reaches a flat mirror placed at an angle $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflection occurs whenever light is incii37m/r2 *sh63 vunbcqvdah6 adent on

  05.18: A student hold a hand e2;yb i9( wbnffe1565jkf ,hvx+ trocmirror to observe the back of her head while standing in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall mirror and she holdbec kefhbnx6( o+y1fv5w2i,;5 j9tfrs the hand mirror 1 ft behind her head, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction when it enpy1 c80kdgykxu,:n7yj3viae vm.d *)ters a new material. Which one of the following choices is the term best asunpd c:,kmev7vgj*1 axy83 iky).dy 0 sociated with this phenomenon?

  96.19: Light that has wavelengqd,l6z4ip5 p tth of 500 nm in air has wavelength 400 nm in a transptp6l,5 idpq4 zarent material. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its 552wmk5 tgvs+mccc;g i /:t pxspeed and its:

  00.01: As a wave moves from one mennn6+x6m8qr m dium to a second medium with a different index of refraction which of the following wave propenqnrmm+6x6n 8 rties would NEVER change?

  05.47: A sound wave genewz- 7 ;pckq0crrated from a tuning fork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength and frequency of the soundcc w- 0zprq;7k as it passes from air to rock?

  14.28: A waterproof spea bc je+38kbfu8khp4s+ s p7nx0rr9eg8ker placed at the bottom of a swimming pool emits a sound wave that travels toward the surface of the water. In the waec7pu8bfk erh83 nkbxrsg +8s9 +0p4jter, the sound wave has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of white light strikes a rectangular glass block witz;1 m7r, akr; nejr.olh an angle 1;rez,rjko;ml .ar n7of incidence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed toward a point P on a boundar ouvsw(+oq*( o9jg8lv y as shown to the right. Which seg9jv s(8og*u(w +ooq lvment best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light enterinj/7 4z v4b hhsc,3 5snnamr4igg air from wm/4jb 3r7shac 4,zvn ihnsg54ater? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the angle of incidence for which thh ls58ax cz ryo9-:fc/)niw3we angle of refractio9xwficysh3 a5:r-/8oznw l c)n is:

  95.12: The principle underly fzq 4/9szfx(z;gt,uylb9 7xping fiber optics is:

  98.36: The critical angle in a transparent substance 7wuzz9qs. hm):7qs b gsurrounded by air is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from material X with an index of refraction oj :,3fmct(uewf n = 1.5 to material Y with an index of refractifm 3ce j,(twu:on of n = 2.0. If the speed of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece of glass by ukve41d3bo3te r o 1x(observing the critical angle of the light in each material. Glass with an index of refraction of 1.52oredv 11eu kb3x43(o t has a critical angle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines fr gph+c7qz ob lp7pnz :e+*ieg-d)k8c.om air into a clear material. When the light makes an angle of ink*+hdb+77 pz z:o 8peiggcl). cnp-qecidence equal to $30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic laser is embedded in a material of index of refkh5bnd,+lp t.raction n. The laser beam emerges from thel.5d,+kpbnh t material and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3 as shown inp(kh ; om9fk pa0kzd78 the accompanying figure. What is true about the respective indices of refraction (n1, n2, 9ap87;0d fp k(mhokkzand n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown in9cmgg4-h: fuif4hr; t the diagram. What may be concluded about the three indexes of re h:h u;-9g4irf cfgm4tfraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path th4d 4w toza ):fh)gdrh m8p;n.tat a light ray takes passing through three transparent materials. The infwd8mh):pn.)4tdrzga h4ot ;dices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below showik3xqd9br,/l u(znoz5ye36q s the path taken by a monochromatic light ray traveling /b,6(d e oli5rkn qu339yzqzxthrough three media.The symbols $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of light travelva 7zp0u5:g1 eb dc xp169vnesing in glass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light is incident on the surface of a rectangular bl e-nuh kv mlgy5h030a1ock of glass aguvh010h y5- lnm3kaet an angle of $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelength 600nm is 2jhv+nlx +9fh 57lh 5cd hl-xptransmitted from air into a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after it e jf9nhhlv2 h7+ hp+x5l lx5-dcnters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as shown. i gohxx,*iuc1ix:qsjv4e ,2 k w568m tThe glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows th2vxs tx 4 :uho1 ,imkegwxijqc,865* ie path of the light after it exits the glass?